Steve,
I'm not expert enough to pick out a grackle hybrid. The reason I went for the Common Grackle i.d., though, is because there was very little size difference between the male and the female. Would there be two hybrids? She was neither a Brewers nor a GT Grackle, and was more purplish than the female GT.
Penny Koyama, Bothell
plkoyama at verizon.net


----- Original Message -----
From: sgmlod at aol.com
To: Tweeters at u.washington.edu
Sent: Sunday, May 17, 2009 10:31 PM
Subject: [Tweeters] Ellensburg Grackles


Greetings All


Entirely purple grackles in the west almost invariably are GT Grackles or GT Grackle x Brewer's Blackbirds. Penny, if you are most familiar with grackles from AZ and south Texas, it is probably Great-taileds that you know best.


In any case, the east coast version of Common Grackle has never made it to the Mississippi River, as far as I know, and is extremely unlikely. If not GT Grackles, there was a bird rather similar to a "purple" Common Grackle in the SF Bay area (I believe) that was well documented and turned out to be a GTGrackle x Brewer's Blackbird.


Cheers
Steve Mlodinow
Everett WA


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